Dedicated Host (DDH) is a cost-effective hosting solution that Alibaba Cloud provides for enterprise customers. It offers dedicated physical resources, flexible deployment options, and rich configurations. DDH helps you migrate your workloads to the cloud at the lower total cost of ownership (TCO).
Features
DDH supports automatic deployment and host association. You can use DDH to flexibly deploy your business. For more information, see Functions and features.
Benefits
Compared with a shared host (multi-tenant environment), a dedicated host provides an environment dedicated to a single tenant based on the virtualization technology of Alibaba Cloud, in which you can have exclusive access to all physical resources of the host. For more information, see Benefits.
The following figure shows the differences between dedicated hosts and shared hosts.
Scenarios
DDH meets strict security and compliance requirements and allows you to bring your own licenses (BYOLs) to the cloud. DDH significantly reduces the cost of migrating your business to the cloud. For more information, see Common scenarios.
Dedicated host types
A dedicated host is a cloud host whose physical resources are dedicated to a single tenant. As the only tenant of a host, you do not need to share the physical resources of the host with other tenants. You can also obtain the physical attributes of the host, including the number of CPUs (sockets), number of physical CPU cores, and memory size. Then, you can create Elastic Compute Service (ECS) instances of the specified instance families based on the physical attributes. For more information, see Dedicated host types.
Related services
For more information about Alibaba Cloud services supported by ECS instances that are created on a dedicated host, see What is ECS?
The ECS instances on a dedicated host have different features from those on a shared host. For more information, see Differences between ECS instances on a dedicated host and those on a shared host.
Usage notes
For more information about the limits on DDH resources, see Limits.
You can use the ECS console to create a dedicated host. For more information, see Create a dedicated host.
After you create a dedicated host, you can perform the following operations:
Billing
When you use a dedicated host, take note of the following billing information of the dedicated host and the ECS instances deployed on the host:
Dedicated host: The subscription billing method is available. For more information, go to the Dedicated Host tab in the Pricing section of the ECS product page.
ECS instances: The billing method depends on the resource type. For more information about ECS billing, see Billing overview.
For more information about DDH billing, see Billing overview.